|OK, if you know what the buttons can adjust but you can't totally correct then the monitor is probably not usable.|
Lets mov on to the other monitor.
When you connect the other monitor are you connecting it to the SAME port as the old monitor?
When you FIRST start the computer does text show?
Is the second monitor smaller, the same, or larger screen size than the original?
If smaller and you see text at the beginning then reconnect the old monitor and boot to Windows. Set the resolution down to 800 x 600 at 72Hz with 16 bit color. Then try the new monitor again.